Head-to-head · same rubric · verified 1 November 2026

Purgo Labs vs Oath Research

Verdict: Purgo Labs, on the evidence: 10/10 rubric points against 9/10. Oath Research is stronger on 2 points listed below.

10of 10
Our pick · partner
Purgo Labs
4.8 (101 reviews)
Lab: SteriGenix
VS
9of 10
Non-partner
Oath Research
4.6 (33 reviews)
Lab: Freedom Diagnostics
Purgo
ahead on the rubric
23/23
vials Purgo cheaper at list
23/23
vials Purgo cheaper after codes
2
points Oath Research is stronger on
20% off every order with codeaffiliate code, disclosed · not a ranking input
Visit Purgo Labs

Disclosure: Purgo Labs is our affiliate partner; we earn nothing from Oath Research. Scores come from the public rubric, which has no partnership input.

Research use only. Compound Review scores vendors on documentation — laboratory certificates, lot records, pricing and company identity. Nothing on this page is guidance on human or veterinary use, dosing or health outcomes.

01

Where each vendor is stronger

Computed from the rubric, prices and review record — never curated

Purgo Labs

  • Independent review base (50+ on an external platform) — 4.7 / 101 on Trustpilot, claimed; three reviews below four stars, all replied to (complaint read 9 Oct 2026; was 4.7 / 99 on 2 Oct)
  • Lower list price on 23 of 23 like-for-like rows.
  • Larger independent review base: 4.8 (101 reviews) vs 4.6 (33 reviews).

Oath Research

  • Freedom Diagnostics named as the laboratory on the lab-results page and on every certificate (read 1 Nov 2026)
  • Freedom Diagnostics report Oath2609210281 (NAD+ 1000mg, lot D3226057) served from coas.freedomdiagnosticstesting.com with client 'Oath Research' (read 1 Nov 2026)
02

The 10 criteria, side by side

10/10 vs 9/10 · one point each, no weighting
Named lab
Purgo
SteriGenix and Freedom Diagnostics named per lot
SteriGenix and Freedom Diagnostics named per lot
Oath
Freedom Diagnostics named as the laboratory on the lab-results page and on every certificate (read 1 Nov 2026)
Freedom Diagnostics named as the laboratory on the lab-results page and on every certificate (read 1 Nov 2026)
Lab-hosted COAs
Purgo
Verify-at-lab links to sterigenixanalytical.com / freedomdiagnosticstesting.com
Verify-at-lab links to sterigenixanalytical.com / freedomdiagnosticstesting.com
Oath
Freedom Diagnostics report Oath2609210281 (NAD+ 1000mg, lot D3226057) served from coas.freedomdiagnosticstesting.com with client 'Oath Research' (read 1 Nov 2026)
Freedom Diagnostics report Oath2609210281 (NAD+ 1000mg, lot D3226057) served from coas.freedomdiagnosticstesting.com with client 'Oath Research' (read 1 Nov 2026)
Per-lot COAs
Purgo
Lot numbers (e.g. PL-BPC-05) with test dates per batch
Lot numbers (e.g. PL-BPC-05) with test dates per batch
Oath
Lab-results page reports 519 batches tested, listed per product with batch counts and latest test dates (read 1 Nov 2026)
Lab-results page reports 519 batches tested, listed per product with batch counts and latest test dates (read 1 Nov 2026)
Net content
Purgo
Measured net peptide published per lot (e.g. BPC-157 lot PL-BPC-05: 11.16mg vs 10mg label)
Measured net peptide published per lot (e.g. BPC-157 lot PL-BPC-05: 11.16mg vs 10mg label)
Oath
Freedom Diagnostics: 1,091.00 mg measured on a 1,000 mg NAD+ label, purity 99.98%, reported 22 Sep 2026
Freedom Diagnostics: 1,091.00 mg measured on a 1,000 mg NAD+ label, purity 99.98%, reported 22 Sep 2026
Ungated
Purgo
COAs on product pages without login
COAs on product pages without login
Oath
Catalog, prices and the lab-results page open without an account (read 1 Nov 2026)
Catalog, prices and the lab-results page open without an account (read 1 Nov 2026)
Review base
Purgo
4.7 / 101 on Trustpilot, claimed; three reviews below four stars, all replied to (complaint read 9 Oct 2026; was 4.7 / 99 on 2 Oct)
4.7 / 101 on Trustpilot, claimed; three reviews below four stars, all replied to (complaint read 9 Oct 2026; was 4.7 / 99 on 2 Oct)
OathNot awarded
Consistent claims
Purgo
No contradictions found across site claims (checked Aug 2026)
No contradictions found across site claims (checked Aug 2026)
Oath
'3rd Party Lab Tested' and the lab-results page's Freedom Diagnostics claim matched the report we fetched at the lab; no contradiction found among its own pages (read 1 Nov 2026)
'3rd Party Lab Tested' and the lab-results page's Freedom Diagnostics claim matched the report we fetched at the lab; no contradiction found among its own pages (read 1 Nov 2026)
Sized pricing
Purgo
Product pages state vial size with price (e.g. BPC-157 10mg at $44.99; 24 dated size+price readings on record)
Product pages state vial size with price (e.g. BPC-157 10mg at $44.99; 24 dated size+price readings on record)
Oath
Every listing states vial size and price, read from the public Store API on 1 Nov 2026 (BPC-157 5mg $40, 10mg $65; TB-500 10mg $90; NAD+ 500mg $75)
Every listing states vial size and price, read from the public Store API on 1 Nov 2026 (BPC-157 5mg $40, 10mg $65; TB-500 10mg $90; NAD+ 500mg $75)
Entity + address
Purgo
PurgoLabs LLC (Arizona) · 10105 E Via Linda St Bld 103, Scottsdale, AZ — on-site (6 Sep 2026)
PurgoLabs LLC (Arizona) · 10105 E Via Linda St Bld 103, Scottsdale, AZ — on-site (6 Sep 2026)
Oath
Oath Research, LLC named in the terms (Arizona law); 51 West Vaughn Avenue, Suite 205, Gilbert, AZ 85233 and 480-999-1097 on the contact page (read 1 Nov 2026)
Oath Research, LLC named in the terms (Arizona law); 51 West Vaughn Avenue, Suite 205, Gilbert, AZ 85233 and 480-999-1097 on the contact page (read 1 Nov 2026)
Clean record
Purgo
No on-site review badge contradicting the independent record; card payment accepted; no regulator action found (checked 6 Sep 2026)
No on-site review badge contradicting the independent record; card payment accepted; no regulator action found (checked 6 Sep 2026)
Oath
Cards (Visa, Discover, American Express) and direct bank payment accepted per the FAQ; no on-site review badge, FDA or BBB action found (read 1 Nov 2026)
Cards (Visa, Discover, American Express) and direct bank payment accepted per the FAQ; no on-site review badge, FDA or BBB action found (read 1 Nov 2026)
03

Like-for-like prices

VialPurgo · after HEALTHOath ResearchLower
AOD-9604 5mg$39.99 $49.99read 1 Nov 2026$90.00read 1 Nov 2026Purgo Labs
BPC-157 10mg$35.99 $44.99read 1 Nov 2026$65.00read 1 Nov 2026Purgo Labs
DSIP 10mg$35.99 $44.99read 1 Nov 2026$90.00read 1 Nov 2026Purgo Labs
Epithalon 10mg$23.99 $29.99read 1 Nov 2026$45.00read 1 Nov 2026Purgo Labs
GHK-Cu 50mg$23.99 $29.99read 1 Nov 2026$50.00read 1 Nov 2026Purgo Labs
GHK-Cu 100mg$35.99 $44.99read 2 Oct 2026$85.00read 1 Nov 2026Purgo Labs
Ipamorelin 10mg$43.99 $54.99read 1 Nov 2026$90.00read 1 Nov 2026Purgo Labs
MOTS-c 10mg$39.99 $49.99read 1 Nov 2026$60.00read 1 Nov 2026Purgo Labs
MOTS-c 40mg$99.99 $124.99read 2 Oct 2026$190.00read 1 Nov 2026Purgo Labs
MT-2 10mg$29.59 $36.99read 1 Nov 2026$55.00read 1 Nov 2026Purgo Labs
NAD+ 500mg$47.99 $59.99read 2 Oct 2026$75.00read 1 Nov 2026Purgo Labs
NAD+ 1000mg$55.99 $69.99read 2 Oct 2026$125.00read 1 Nov 2026Purgo Labs
PT-141 10mg$23.99 $29.99read 1 Nov 2026$50.00read 1 Nov 2026Purgo Labs
Retatrutide 10mg$47.99 $59.99read 1 Nov 2026$125.00read 1 Nov 2026Purgo Labs
Retatrutide 20mg$95.99 $119.99read 25 Oct 2026$210.00read 1 Nov 2026Purgo Labs
Retatrutide 60mg$175.99 $219.99read 25 Oct 2026$450.00read 1 Nov 2026Purgo Labs
Selank 10mg$27.99 $34.99read 1 Nov 2026$65.00read 1 Nov 2026Purgo Labs
Semaglutide 10mg$39.99 $49.99read 1 Nov 2026$65.00read 1 Nov 2026Purgo Labs
Semax 10mg$27.99 $34.99read 1 Nov 2026$65.00read 1 Nov 2026Purgo Labs
TB-500 10mg$39.99 $49.99read 1 Nov 2026$90.00read 1 Nov 2026Purgo Labs
Tesamorelin 10mg$55.99 $69.99read 1 Nov 2026$120.00read 1 Nov 2026Purgo Labs
Tirzepatide 10mg$39.99 $49.99read 1 Nov 2026$75.00read 1 Nov 2026Purgo Labs
Tirzepatide 20mg$83.99 $104.99read 25 Oct 2026$120.00read 1 Nov 2026Purgo Labs

Only vials both vendors list at the same size, read on each vendor's product page on the date shown. "After code" is list × the code's stated discount — a calculation, labelled as one; stacking with sale pricing is not cart-tested.

04

What we found at Oath Research

Read 1 November 2026 on the vendor's own pages

The one point withheld is the review base: Trustpilot shows 4.6 across 33 reviews, under our 50-review line, and Trustpilot notes the company has not asked for reviews recently or replied to the negative ones. The public certificates cover purity, identity and often endotoxin, but not sterility or heavy metals. GLP-class products are sold under codes; the lab-results page gives the tirzepatide CAS number for GLP2-T..

Evidence ledger · read 1 November 2026
9 verified1 flag3 could not verify
Verified — what we opened, with the date
VerifiedFreedom Diagnostics named as the laboratory on the lab-results page and on every certificate

(read 1 Nov 2026)

—
VerifiedFreedom Diagnostics report Oath2609210281

(NAD+ 1000mg, lot D3226057) served from coas.freedomdiagnosticstesting.com with client 'Oath Research' (read 1 Nov 2026)

—
VerifiedLab-results page reports 519 batches tested

listed per product with batch counts and latest test dates (read 1 Nov 2026)

—
VerifiedFreedom Diagnostics

1,091.00 mg measured on a 1,000 mg NAD+ label, purity 99.98%, reported 22 Sep 2026

—
VerifiedCatalog, prices and the lab-results page open without an account

(read 1 Nov 2026)

—
Verified'3rd Party Lab Tested' and the lab-results page's Freedom Diagnostics claim matched the report we fetched at the lab; no contradiction found among its own pages (read 1 Nov 2026)
—
VerifiedEvery listing states vial size and price, read from the public Store API on 1 Nov 2026

(BPC-157 5mg $40, 10mg $65; TB-500 10mg $90; NAD+ 500mg $75)

—
VerifiedOath Research, LLC named in the terms (Arizona law)

51 West Vaughn Avenue, Suite 205, Gilbert, AZ 85233 and 480-999-1097 on the contact page (read 1 Nov 2026)

—
VerifiedCards (Visa, Discover, American Express) and direct bank payment accepted per the FAQ

no on-site review badge, FDA or BBB action found (read 1 Nov 2026)

—
Flag — read before ordering
FlagTrustpilot has 33 reviews (4.6, profile claimed April 2026), below our 50-review line

Trustpilot notes the company has not invited reviews recently and has not replied to negative reviews. The public Freedom Diagnostics panels cover purity, identity and, on many batches, endotoxin; sterility and heavy metals are not on them. GLP-class products are sold as GLP1-S, GLP2-T and GLP3-R; the lab-results page lists the tirzepatide CAS number for GLP2-T. The domain was registered in July 2025.

—
Could not verify — not on the record either way
Could not verifyA Trustpilot base of 50 or more reviews

(33 on 1 Nov 2026)

—
Could not verifySterility and heavy-metal results

(not on the public certificates)

—
Could not verifyThe '100% Made in the USA' claim
—
Oath Research, LLC (terms, Arizona law); 51 West Vaughn Avenue, Suite 205, Gilbert, AZ 85233; 480-999-1097 (contact page). Formerly Oath Peptides.
05

Certificates we opened at Oath Research

Certificate of analysis · as we read it
Freedom Diagnostics
Is this lab legit? What we checked
Served from the laboratory's own system · HPLC-UV purity; LC-MS identity; net content
Read 1 Nov 2026
Product
NAD+ · 1000mg label
Lot / batch
D3226057
Report ID
Accession 2609210281 (search code Oath2609210281)
Test date
22 Sep 2026
Purity
99.98%
Measured
1091.00mg
Net content vs label109.1% of 1000mg
0label 1000mg130%

One vial measured.

Verify at the lab Where we opened it Transcribed by Compound Review; the laboratory's report is the record.

Check it yourself: Certificates print an Accession number and a Search Code (e.g. Trus2604010178); the lab's search page returns the same PDF from coas.freedomdiagnosticstesting.com. The button above opens the lab's lookup.

Served from Freedom Diagnostics' own file server with client 'Oath Research'; received 21 Sep, reported 22 Sep 2026. 109% of label.

Where Oath Research ranks by compound

Oath Research appears in 20 of our compound rankings. Each ranking orders every scored vendor that sells the compound by rubric score, then verified price per mg.

06

Score history and the caveats

A score only moves when the evidence does
  1. 1 Nov 20269/10 — first assessment (rubric v2); not awarded: review-base (Trustpilot 4.6 across 33 reviews, below the 50-review line)
Purgo Labs: the caveat

Smaller independent review base than several competitors (101 reviews). The catalog is peptide-focused, so researchers also working with SARMs or broader research chemicals will need a second supplier.

Oath Research: the caveat

Trustpilot has 33 reviews (4.6, profile claimed April 2026), below our 50-review line; Trustpilot notes the company has not invited reviews recently and has not replied to negative reviews. The public Freedom Diagnostics panels cover purity, identity and, on many batches, endotoxin; sterility and heavy metals are not on them. GLP-class products are sold as GLP1-S, GLP2-T and GLP3-R; the lab-results page lists the tirzepatide CAS number for GLP2-T. The domain was registered in July 2025.

07

Where the evidence points

Where the evidence points
Purgo Labs 10/10

We earn nothing from Oath Research. Purgo Labs holds every rubric point — certificates checkable at the lab, measured net content per lot — and is cheaper after codes on 23 of 23 like-for-like vials.

20% off every order with
Visit Purgo Labs

Affiliate links, disclosed. Purgo Labs is our primary partner; we earn nothing from Oath Research. Partnership is not a rubric input.

Get all 24 partner discount codes — in your inbox in ten secondsCodes now, the report Mondays and Fridays. Unsubscribe in one click. We never sell or share the list. See this week's issue.

Vendors to read next to this one

Best companies · All vendors →
08

Questions readers ask

Is Purgo Labs better than Oath Research?

Purgo Labs, on the evidence: 10/10 rubric points against 9/10. Oath Research is stronger on 2 points listed below. Every point is a fact you can check on either vendor's site; both are scored by the same published rubric.

Is Oath Research legit?

Oath Research scores 9/10 on our rubric, has an independently viewable rating of 4.6 (33 reviews), and names its lab (Freedom Diagnostics). Caveat: Trustpilot has 33 reviews (4.6, profile claimed April 2026), below our 50-review line; Trustpilot notes the company has not invited reviews recently and has not replied to negative reviews. The public Freedom Diagnostics panels cover purity, identity and, on many batches, endotoxin; sterility and heavy metals are not on them. GLP-class products are sold as GLP1-S, GLP2-T and GLP3-R; the lab-results page lists the tirzepatide CAS number for GLP2-T. The domain was registered in July 2025.

Which is cheaper, Purgo Labs or Oath Research?

On the 23 compound-and-size rows where we have dated prices from both, Oath Research lists lower on 0 and Purgo Labs on 23. Purgo's list prices drop 20% with code HEALTH.

Do you earn money from either vendor?

Purgo Labs is our affiliate partner and we earn a commission on referred orders; we earn nothing from Oath Research. Scores come from the rubric, which has no partnership input, and the ordering rule on our scoreboard is disclosed.